NO. rm. RE VIE W OF SOME A MERICA N MO THS—B USCK. 735 
12. Cilia of hindwings tinged with reddish 10. rUiella. 
Cilia of liindwing not reddish 9. applana. 
13. With large curved black line on disk 21. aurvilinklla. 
Without such line 14 
14. VVMth large thoracic crest 1[). ariviriaella. 
Witliout such crest 15 
15. With pronounced row of dark spots round apical edge 16 
Without such row 19 
1(). With dark cloudy area above second discal spot 17 
Without such dark area 14- IhoracefameUa. 
17. Basal part of costa much lighter than rest of wing 6. arnicella. 
Basal part of costa not or only slightly lighter 18 
18. Second discal spot containing only a single white scale IS. fulva. 
Second discal spot containing a round white dot 5. pulvipennella. 
19. Ground color gray 20 
(iround color purplish fuscous or brown 13. nom-vnindi. 
20. With red scales around second discal spot 8. sanguinella. 
Without red scales around second discal spot 21 
21. Mindwing whitish 7. argillacea. 
Hindwing dark gray 20. muncolorella. 
22. With blackish dorsal patch at anal angle 27. posticella. 
Without such patch 23 
23. With continuous blackish line before cilia ti 24 
With series of dots along apical edge 25 
24. With curved black spot on disc 26. "lylhreUu. 
Without such spot 28. nubiferella. 
25. Forewings grayish ocherous 26 
Forewings tawny reddish 29 
26. Forewings with rosy tint 25. canadetisis. 
Forewings not rosy 27 
27. Forewings with single black spot at end of disk 28 
Forewings with two black spots at end of disk 23. sahulella. 
28. With conspicuous dark area between and above discal spots 24- arenella. 
Such area absent or only slightly indicated 22. serndella. 
29. AVith dark triangular shade at the end of disc ,. 29. robiniella. 
Without such shade 30. lecontella. 
30. Forewings with raised scales 39. scabella. 
Without raised scales 31 
31. AVith base of wing and costal edge whitish 38. c'mereocostella. 
Base of wing and costa not whitish 32 
32. With pale second discal spot 33 
Without such spot 36 
33. Second discal spot conspicuously white and preceded by longitudinal white 
line 31. emeritella. 
Second discal spot not conspicuous and not preceded by white line 34 
34. With thin, interrupted longitudinal white line from basal third of costa, crossing 
costal veins 3.5. harberella. 
Without such line 35 
35. With hindwings whitish .32. togata. 
With hindwings fuscous 33. hetulella. 
36. With distinct blackish terminal dots 37 
Tenninal dots not separate „ 34. nervosa. 
37. With pale acutely angulated fascia 36. heraciiana. 
Without such fascia 37. grotella. 
